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Best E-Signature Software Apps

17+ iOS apps curated and reviewed

4.0 avg rating
15 free apps
Updated October 2026

With an average user rating of 4.0★, the e-signature software category is one of the App Store's strongest. Browse all 17+ apps we track, sorted so the most loved ones surface first.

Compare top E-Signature Software Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Kunlun E-SignatureKunlun E-SignatureFree—NoNoOct 2026
2Acrobat Reader: PDF EditorAcrobat Reader: PDF EditorFree4.6★ (665K)NoYesNov 2026
3DottedSign - eSign & Fill DocsDottedSign - eSign & Fill DocsFree4.3★ (21)NoYesOct 2026
4Foxit eSignFoxit eSignFree3.3★ (14)NoNoOct 2026
5eSign ProeSign ProFree—NoNoOct 2026
6iWatermark Lite Watermark PicsiWatermark Lite Watermark PicsFree2.0★ (12)NoNoAug 2026
7JumpTrackJumpTrackFree3.3★ (4)NoNoOct 2026
8Sunny16 exposure calculatorSunny16 exposure calculator$0.994.8★ (4)NoNoNov 2026

Top Picks for E-Signature Software

Acrobat Reader: PDF Editor#2

Acrobat Reader: PDF Editor by Adobe Inc.

Documents Converter & Signer
Strong Contender
💼 Business
4.6😞(665K ratings)
FreeIn-App Purchases
#2in Business
Acrobat Reader: PDF Editor screenshot 1
Acrobat Reader: PDF Editor screenshot 2
Acrobat Reader: PDF Editor screenshot 3
Acrobat Reader: PDF Editor screenshot 4
Acrobat Reader: PDF Editor screenshot 5
Acrobat Reader: PDF Editor screenshot 6

This app allows users to open, read, fill, sign, and comment on PDF documents. It offers advanced features like PDF creation, editing, conversion to other formats, and AI-powered assistance for a fee.

What We Love

  • 🚀 Fast and efficient
  • 🔒 Secure document storage
  • 👍 Convenient for reading and annotating PDFs
  • 👍 Useful for students and professionals

Room to Improve

  • 🐛 Buggy and unreliable
  • 🔒 Overly intrusive login requirements
  • 💰 Expensive subscription model
  • 👎 Counterintuitive user interface changes
  • 🔍 Poor search and organization features

More E-Signature Software apps to explore

FAQ about E-Signature Software

Are there free e-signature software apps for iPhone?
Yes — 15 of the top e-signature software apps we rank are free to download, including Kunlun E-Signature and Acrobat Reader: PDF Editor.
Kunlun E-Signature has no ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 17+ e-signature software apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.